1// Copyright (c) 2012 The Chromium Authors. All rights reserved.
2// Use of this source code is governed by a BSD-style license that can be
3// found in the LICENSE file.
4
5#include "chrome/browser/icon_loader.h"
6
7#include "base/basictypes.h"
8#include "base/bind.h"
9#include "content/public/browser/browser_thread.h"
10
11using content::BrowserThread;
12
13IconLoader::IconLoader(const base::FilePath& file_path,
14                       IconSize size,
15                       Delegate* delegate)
16    : target_message_loop_(NULL),
17      file_path_(file_path),
18      icon_size_(size),
19      delegate_(delegate) {}
20
21IconLoader::~IconLoader() {
22}
23
24void IconLoader::Start() {
25  target_message_loop_ = base::MessageLoopProxy::current();
26
27  BrowserThread::PostTaskAndReply(BrowserThread::FILE, FROM_HERE,
28      base::Bind(&IconLoader::ReadGroup, this),
29      base::Bind(&IconLoader::OnReadGroup, this));
30}
31
32void IconLoader::ReadGroup() {
33  group_ = ReadGroupIDFromFilepath(file_path_);
34}
35
36void IconLoader::OnReadGroup() {
37  if (IsIconMutableFromFilepath(file_path_) ||
38      !delegate_->OnGroupLoaded(this, group_)) {
39    BrowserThread::PostTask(ReadIconThreadID(), FROM_HERE,
40        base::Bind(&IconLoader::ReadIcon, this));
41  }
42}
43
44void IconLoader::NotifyDelegate() {
45  // If the delegate takes ownership of the Image, release it from the scoped
46  // pointer.
47  if (delegate_->OnImageLoaded(this, image_.get(), group_))
48    ignore_result(image_.release());  // Can't ignore return value.
49}
50